import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public class E17_GerbilMap {

	public static void main(String[] args) {
		Map<String, Gerbil> map = new HashMap<String, Gerbil>();
		map.put("ONE", new Gerbil());
		map.put("TWO", new Gerbil());
		map.put("THREE", new Gerbil());
		map.put("FOUR", new Gerbil());
		map.put("FIVE", new Gerbil());

		Iterator<Entry<String, Gerbil>> it = map.entrySet().iterator();

		while (it.hasNext()) {
			Entry<String, Gerbil> entry = it.next();
			System.out.print(entry.getKey() + ": ");
			entry.getValue().hop();
		}

	}

}
